Write a program to input a number and check whether it is Composite Number or not?(Num is not Prime, called Composite)

34)  Write a program to input a number and check whether it is Composite Number or not?(Num is not Prime, called Composite)

import java.util.*;

public class Composite_number

{

     public static void main(String args[ ])

    {

        Scanner sc = new Scanner (System.in);

        System.out.println("Enter a number");

        int a = sc.nextInt();

        int c = 0;

        for(int i=1;i<=a;i++)

        {

            if(a%i==0)

            c++;

        }

        if(c!=2)

        {

            System.out.println("Entered number is a COMPOSITE number");

        }

        else

        {

             System.out.println("Entered number is not a COMPOSITE number");

        }

    }

}